2020 IEEE PES/IAS PowerAfrica最新文献_第10页

Active Distribution System State Estimation: Comparison Between Weighted Least Squares and Extended Kalman Filter Algorithms 主动配电系统状态估计:加权最小二乘法与扩展卡尔曼滤波算法的比较

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219899

J. Watitwa, K. Awodele

{"title":"Active Distribution System State Estimation: Comparison Between Weighted Least Squares and Extended Kalman Filter Algorithms","authors":"J. Watitwa, K. Awodele","doi":"10.1109/PowerAfrica49420.2020.9219899","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219899","url":null,"abstract":"Power distribution systems have a topology which is typically unknown to the distribution system operators. Remote Terminal Units and SCADAs monitor these networks primarily at the substation level. However, with the widespread integration of Distributed Generation units (DGs), the need for real-time control of Active Distribution Networks is urgent. While DGs can improve the performance of power systems through voltage support, price elasticity, and reduced emissions of greenhouse gases, they also present challenges such as voltage spikes and bidirectional power flows. The distribution systems' state needs to be known accurately with high refresh rates and low time latency to deal with these issues. Real-time state estimation (SE) that use of Phasor Measurement Units (PMU) data allows the prediction of the distribution systems' nodal voltages and phasor angles. This paper presents a performance analysis comparison between the Weighted Least Square (WLS) and the Extended Kalman Filter (EKF) algorithms on active distribution grids. The WLS is a static SE algorithm, while EKF is a recursive SE method. The paper first recounts the analytical formulation of both approaches and then quantifies the differences in their performance. The tests were carried out on a modified IEEE-33 bus test feeder that included an optimally placed DG. For the test feeder's nodes load profile, the PMU-data generated during the ADRES-CONCEPT project was used. MATLAB and OpenDSS software were used to run the experiments. The results show that if the process model is correct, the EKF approach performs better.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123820188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Adaptive PI-GA Based Technique for Automatic Generation Control with Renewable Energy Integration 基于自适应PI-GA的可再生能源集成自动发电控制技术

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219960

Isaac Kofi Otchere, Kwabena Amoako Kyeremeh, E. Frimpong

引用次数: 2

Embedded Power System Monitoring Of Illegal Power Connections In Kenyan Domestic Supply 嵌入式电力系统监测肯尼亚国内供电中的非法供电

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219799

Karobia Pauline N., Ngoo Livingstone, Muriuki James

{"title":"Embedded Power System Monitoring Of Illegal Power Connections In Kenyan Domestic Supply","authors":"Karobia Pauline N., Ngoo Livingstone, Muriuki James","doi":"10.1109/PowerAfrica49420.2020.9219799","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219799","url":null,"abstract":"Globally Technical Losses (TLs) and Non-Technical Losses (NTLs) are a significant challenge for power distribution systems. Mostly NTLs is caused by illegal power connection which can be as much as half of all the energy supplied in some countries. This implies that power generated may not meet the demand and therefore the power utilities are diverting to other types of power generation that are cheaper, reliable and cost effective. High demand for electric power that does not match the current power generated always leads to shortage thus increasing the cost per unit of electric energy consumed. This highly affects the economy of any nation. Most utility company experiences loss of revenue since illegally consumed power cannot be measured or billed. The difference between the total energy sent to the consumers and the sum of energy consumed by all the connected consumers can be determined, and the total amount of NTLs in the distribution line evaluated. Also, the high losses incurred are a burden to the legally connected consumers since it is factored out in their bills. The scenario of NTLs is not restricted to underdeveloped countries and the percentage varies depending with the connected electric users. The techniques used are illegal tap wiring and meter tampering through security seal violations. The existing system in Kenya does not identify the location where illegal connection has occurred. The suggested embedded system will remotely locate the users who attempts to tap power at the service head which is not billed. The system will communicate with the utility company immediately about the status of the affected connection via Global System Communication. This will protect the distribution network in Kenya from high NTLs caused by illegal connections thus lowering the cost of electricity.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128777031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-Technical Power Loss Reduction and Transients Stability: Optimal Placement of Reclosers 非技术功率损耗减少和瞬态稳定性:重合闸的最佳位置

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219824

W. O. Amolo, P. Musau, A. Nyete

引用次数: 0

Intelligent Energy Management Device for Energy Conservation in Air conditioners 一种空调节能智能能源管理装置

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219800

Stephen Anokye, Elvis Twumasi, E. Frimpong, Bernice Monney Agyirakwa, Rhoda Etornam Kudor

引用次数: 0

An Adaptive Distance Protection Scheme for High Varying Fault Resistances 一种高变故障电阻自适应距离保护方案

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219863

Uma Uzubi, A. Ekwue, E. Ejiogu

引用次数: 3

Policy Review of Impact of Distributed Generation on Power Quality 分布式发电对电能质量影响的政策回顾

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219986

Isaac Kofi Otchere, Kwabena Amoako Kyeremeh, Nana Twum Duah, E. Frimpong

引用次数: 1

Wavelet Analysis and Neural Network Scheme for Predicting Transient Stability Status 小波分析与神经网络预测暂态稳定状态

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219977

E. Frimpong, P. Okyere, J. Asumadu

引用次数: 0

Renewable Distributed Generations' Uncertainty Modelling: A Survey 可再生分布式代的不确定性建模:综述

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219893

O. A. Ajeigbe, J. Munda, Y. Hamam

引用次数: 2

Modeling and Implementation of Smart Home and Self-control Window using FPGA and Petri Net 基于FPGA和Petri网的智能家居和自控窗口的建模与实现

2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219925

Lukman Adewale Ajao, J. Agajo, Buhari U. Umar, Tope Tobi Agboade, M. Adegboye

引用次数: 8